Safetypin



March l0, 1942. s. NlTcHMAN 2,275,984

e SAFETYPIN Filed March l2, 1941 2 Sheets-Sheet l March 10, 1942. s, NlTCHMAN 2,275,984

SAFETYPIN Filed March l2, 1941 2 Sheets-Sheet 2 A Ito/'mir Patented Mar. 10, 1942 'muren srares para FFCE 3 Claims;

My invention relates to improvements in safety pins and kindred articles, and the primary object of my invention is to provide a safety pin in the form of a circle or curved loop terminating at one end in a catch and at the opposite end in a point to pass through the articles to be pinned and inserted and caught in the catch, thereby providing a simplied and less expensive safety pin which is especially adapted for certain purposes in addition to being serviceable in all cases where ordinary safety pins are presently used.

Other important objects and advantages of my invention will be apparent from a reading of the following description taken in connection with the appended drawings, wherein for purposes of illustration I have shown a preferred embodiment of my invention.

In the drawings:

Figure 1 is a side elevational view of the embodiment showing the same in closed position.

Figure 2 is a view similar to Figure l but showing the embodiment in partly open position.

Figure 3 is an enlarged fragmentary longitudinal sectional view taken through the catch in Figure 1.

Figure 4 is a longitudinal sectional view taken along the line 4-4 of Figure 1 and looking in the direction of the arrows.

Figure 5 is an enlarged transverse vertical sectional View taken along the line 5-5 of Figure 2 and looking in the direction of the arrows.

Figure 6 is a right hand end elevational view of the catch shown in Figure 2.

Figure 7 is a fragmentary enlarged side elevational view of a modified form involving a pressure cap.

Figure 8 is a top plan view of Figure 7.

Figure 9 is an enlarged transverse vertical sectional view taken along the line 9-9 of Figure '7 and looking in the direction of the arrows.

Figure 10 is an enlarged fragmentary longitudinal section taken through Figure 7 along the line Ill- IU and looking in the direction of the arrows.

Figure 11 is a still further modified form involving pivotal connection of the catch with the pin member and frame of a pressure cap.

Figure 12 is a view similar to Figure 11 but showing the pressure cap removed and the pin member disengaged from the catch.

Referring in detail to the drawings, and first to Figures 1 through 6 thereof, the numeral 5 generally designates the present safety pin which consists of a spring wire loop 6 having a material piercing point 'I at one end thereof and having a return bend or U-shape 3 at its opposite end, the substantially parallel legs 9 and I0 of the said U-shape being tensioned between the side Walls of the substantially tubular catch which is generally designated I I.

The catch side wall I2 extends along one side of both of the legs 9 and Il of the U-shape 8 from a point I3 conformably shaped to the upper leg 9, to a point I curved in conformity with the lower leg Iii, and passes across this point to pass upwardly along the opposite sides of the legs 9 and IG as indicated by the numeral I5 and terminates with its upper edge I6 at a level above the said point i3. The opposite side wall I'I curves downwardly and laterally inwardly from the point I3 to provide a web or partition I8 between the upper and lower legs 9 and Il), respectively, with the side wall portion I5 lying alongside of the portion Il, as clearly illustrated in Figure 5.

The described side wall portions extend only from the inner terminal I9 of the catch to approximately the point designated by the numeral 20, where the side walls become uniformly triangular or segmental in shape to provide a sheath of U-shaped transverse cross section, indicated in Figure 6, for reception of the piercing point l. The fan-shaped side walls have vertical indentations 2I illustrated in Figures 3 and 4, while the opposite sides of the piercing point 'I have notches 22 to accept the projections 2| in the manner indicated in Figure 4, so as t0 lock the pin in closed position. The segmental wall portions 23 are suli'iciently closely spaced with respect to each other so as to require forcible entry of the point 'I and tensioned engagement of the projections 2I in the notches 22 of the point, whereby the point is releasably held with v suicient tenacity for all ordinary purposes.

Referring now to the modified form shown in Figures 7 through 10, the catch already described is generally designated I Ia, instead of I I, and the other parts correspondingly designated. This form differs from the preceding form by the presence of a tensioning cap 25 which comprises a flat stiff material U-shape to frictionally fit over the back of the catch IIa to press the sides of the catch more firmly against the opposite sides of the point of the pin member so as to retain the latter more securely. 'Ihe cap 25 has on its legs vertical indentations 25 to coincide with and press into the indentations ZIa. formed in the sides of the catch and supplying ridges entering the notches 22a in the opposite sides of the point portion of the pin member. In addition the sides of the catch Ila below the vertical indentations are in this form provided with horizontal indentations which provide interior ridges, the cap 25 being similarly provided with indentations 29 dening ridges accepted in the indentations 21 in the sides of the catch. The tension of the cap and the interengagement of the ridges and indentations described provides positive nonshifting connections of the cap and the catch in any direction, so that measurable and properly directed force exerted with the fingers must be exerted to loosen the cap and remove it from the catch to permit the point portion of the pin member to be either removed or inserted.

The form of the invention shown in Figures 11 and 12 is similar in all respects to that shown in Figures 7 through 10 except that whereas the connection between the pin member and the catch is relatively rigid in the foregoing forms, in the present form the connection is pivotal. This is achieved by eliminating the underslung saddle part I5, I6 and bringing the sides of the catch down substantially parallelly as indicated at 30 and rounding the resultant lower edges at 3l and providing a pivot 32 secured between the sides, over which the terminal of the pin member is hooked in the form of an eye 33. In this way, while secured mechanical connection between the pin member 6b and the catch Hb are maintained, the catch can pivot on the pin member on the axis of the pivot 33, downwardly from but not substantially upwardly from the position shown in Figures ll and 12, to provide greater flexibility and adaptability of the arrangement.

Although I have shown and described herein a preferred embodiment of my invention, it is to be definitely understood that I do not wish to limit the application of the invention thereto, except as may be required by the scope of the subjoined claims.

Having described the claimed as new is:

l. A safety pin comprising a spring wire loop formed with a piercing point at one end and a terminal at its opposite end a catch secured on invention, what is said terminal, said catch comprising a receptor for receiving and holding said point, said receptor comprising opposed relatively flexible sidewalls having internal ridges for acceptance in notches formed in the sides of said point, said sidewalls having external indentations, and a tensioned cap having legs to engage the outer sides of said opposite sidewalls to urge the same into more firm engagement with the opposite sides of said point, the legs of said cap having internal ridges acceptable in said external indentations of the sidewalls of the catch whereby said cap is held in place on said catch.

2. A safety pin comprising a spring wire loop formed with a piercing point at one end and a terminal at its opposite end, a catch secured on said terminal, said catch comprising a receptor for receiving andholding said point, said receptor comprising opposed relatively flexible sidewalls having internal ridges for acceptance in notches formed in the sides of said point, said sidewalls having external indentations, and a tensioned cap having legs to engage the outer sides of said opposite sidewalls to urge the same into more firm engagement with the opposite sides of said point, the legs of said cap having internal ridges acceptable in said external indentations of the sidewalls of the catch whereby said cap is held in place on said catch, some of said external and internal indentations and ridges occupying vertical positions and some horizontal positions` 3. As a new article of manufacture, a safety pin provided at one end with a piercing point and at a relatively opposite end with a catch embodying opposed relatively flexible side walls for acceptance of the piercing point therebetween, and a tensioned cap` having legs engaging the outer sides of said walls of the catch and urging the saine into firm engagement with said point; and interengaging means on said cap and said side walls for releasably securing the cap in place on said catch.'

STUART NITCHMAN. 

